CN204917669U - Overhead hoist for wind generating set - Google Patents

Abstract

The utility model provides an overhead hoist for wind generating set. This overhead hoist includes: the handling roof beam, the supporting part, the handling roof beam sets up on the top of supporting part, and the supporting part is at least two, and the position of supporting part on the handling roof beam is adjustable, and every supporting part includes support piece, and support piece includes first landing leg and the second landing leg that connects gradually at least, the second landing leg stretches out the adjustable length of first landing leg, handling portion, handling portion sets up on the handling roof beam. Use the change of the completion converter module that this overhead hoist for wind generating set can labour saving and time saving, and have conveniently carry, advantages such as easy assembly and disassembly, easy operation.

Description

Lifting device for wind turbine

technical field

The utility model relates to the field of auxiliary equipment for wind power generating equipment, in particular to a lifting device for a wind power generating set.

Background technique

With the rapid development of wind power generation technology, a large number of wind power generators are installed and operated, and the workload and work intensity involved in the follow-up maintenance of these wind power generators installed in batches are particularly large. Especially for wind turbines whose independent converter cabinets are designed and arranged under the first-floor platform, the replacement of some important modules such as IGBT is a big problem that consumes working time and affects work efficiency.

At present, the replacement of the converter module of the wind power generating set is mainly done manually, which usually requires 5-6 people to disassemble and replace on site. When replacing, workers need to disassemble the module to be replaced from the bottom of the tower, and then use ropes to transport the removed module from the bottom of the tower to the tower platform, and then transport it from the tower platform to the ground, and then install the new module according to the above The path is transported from the ground to the bottom of the tower and installed. Due to the very heavy weight of the modules, the narrow working space in the tower, and the large gradient of the climbing ladder, the labor intensity of the staff is very high, and there is a risk of injury to the staff, which is prone to accidents.

Utility model content

The embodiment of the utility model provides a lifting device for a wind power generating set to solve the technical problem of difficulty in replacing parts of the wind power generating set.

In order to achieve the above object, the embodiments of the present utility model adopt the following technical solutions:

A lifting device for a wind power generating set, comprising: a lifting beam; a supporting part, the lifting beam is arranged on the top of the supporting part, the supporting part includes a supporting part, there are at least two supporting parts, and the supporting part is on the lifting beam The position of the support is adjustable, and each support includes at least a first leg and a second leg connected in sequence, and the length of the second leg protruding from the first leg is adjustable; the lifting part, the lifting part is set in the lifting on the beam.

Further, the supporting part further includes a crossbeam, there are two support pieces, and the tops of the two support pieces are connected to the crossbeam.

Further, the distance between the bottoms of the two supports is greater than the distance between the tops of the two supports.

Further, the crossbeam is provided with an insertion slot, and the lifting beam is inserted into the insertion slot of the crossbeam.

Further, the crossbeam includes two accommodation frames for accommodating the supports and a connection block connected between the two accommodation frames, the insertion slot is located at the lower part of the connection block, and the connection block is provided with a first through hole communicating with the insertion slot , the hoisting device also includes an anti-skid piece that fits with the first through hole and presses against the hoisting beam.

Further, the first end of the lifting beam is provided with a first limiting hole, and a limiting block is detachably arranged in the first limiting hole.

Further, the second outrigger has a plurality of second limiting holes sequentially arranged along the extending direction, and the hoisting device also includes a limiting hole that cooperates with one of the second limiting holes and limits the extending length of the second outrigger. pin.

Further, the supporting part further includes casters, and the casters are arranged at the bottom of the supporting part.

Further, a slide rail is provided on the lifting beam, and the lifting part is movably arranged on the slide rail along the slide rail.

Further, the lifting part is an electric hoist.

The hoisting device for the wind power generating set in the embodiment of the present invention can be set in the tower of the wind power generating set, and then the parts to be replaced are hoisted by the lifting part arranged on the lifting beam, without the need for the staff to carry the parts Moving can save time and effort to complete the replacement of the internal parts of the wind turbine, reduce the risk of the replacement operation, and ensure the safety of the staff.

Description of drawings

Fig. 1 is the schematic structural view of the lifting device for the wind power generating set of the embodiment of the present invention;

Fig. 2 is the structural representation of lifting beam in Fig. 1;

Fig. 3 is the partial enlarged view of hoisting device in Fig. 1;

Fig. 4 is a partial enlarged view of the support portion in Fig. 1;

Fig. 5 is a schematic diagram of a lifting device for a wind power generating set in a first working position according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of a lifting device for a wind power generating set in a second working position according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of the lifting device for the wind power generating set in the third working position according to the embodiment of the present invention;

Fig. 8 is a schematic diagram of the lifting device for the wind power generating set in the fourth working position according to the embodiment of the present utility model.

Explanation of reference signs:

1. Lifting beam; 11. First end of lifting beam; 12. First limit hole; 13. Slide rail; 2. Support part; 21. Beam; 211. Receiving frame; 212. Connecting block; 214, the first through hole; 215, the second through hole; 22, the first outrigger; 23, the second outrigger; 24, the connecting part; 25, casters; Position hole; 3. Hoisting department; 4. Tower tube; 5. Observation hole; 6. Ladder platform; 61. Ladder guardrail.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the lifting device for the wind power generating set of the utility model will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Fig. 1 is a schematic structural diagram of a lifting device for a wind power generating set according to an embodiment of the present invention. In this embodiment, the device is applied to hoisting a converter module of a wind generating set at the bottom of a tower. In other embodiments, the device can be used to hoist other components, such as other modules of the wind power generating set, and the device can also be applied to other environments.

As shown in Figure 1, the lifting device for the wind power generating set includes a lifting beam 1, a supporting part 2 and a lifting part 3, the lifting beam 1 is arranged on the top of the supporting part 2, and the lifting part 3 is arranged on the top of the lifting beam 1 on. Wherein, there are at least two support parts 2, and the position of the support part 2 on the lifting beam 1 can be adjusted, so that the overall structural stability of the whole lifting device can be guaranteed, and the position of the support part 2 can be easily adjusted according to the support needs. The position on the lifting beam 1, each support part 2 includes a support member, the support member at least includes a first leg 22 and a second leg 23 connected in sequence, and the second leg 23 extends out the length of the first leg 22 It can be adjusted, so that the height of the hoisting device can be adjusted, so that the hoisting device has better adaptability, can be used in the tower of the wind power generating set, and is convenient and labor-saving to hoist the converter module and ensure the power of the converter module. The replacement work is safe and fast.

The lifting beam 1 can be arranged on the top end of the supporting part 2 by means of welding, bolting or riveting.

As shown in FIG. 2 , the lifting beam 1 has an upper plug-in beam connected to the supporting part 2 and a slide rail 13 for installing the lifting part 3 , and the upper plug-in beam and the slide rail 13 are connected by a vertical plate.

Preferably, in order to enable the lifting device to lift the lifting object to a more suitable position during the lifting process, the lifting part 3 is slidably arranged on the slide rail 13 through pulleys. Specifically, the hoisting beam 1 can be made of a special aluminum material for hoisting, which is conducive to realizing the weight reduction of the hoisting beam 1 while ensuring that its strength can meet the demand. The slide rail 13 can be selected from Gaobo’s original American imported C-shaped aluminum inner-wrapped lifting equipment special slide rail. The slide rail is not easy to damage, safe and reliable, and can bear the weight of the converter module (about 150Kg).

Preferably, a first limit hole 12 is provided on the first end 11 of the lifting beam, and the first limit hole 12 is used to prevent the supporting part 2 from detaching from the lifting beam 1 . A limiting block (not shown in the figure) is detachably arranged on the first limiting hole 12 to realize a stop function and prevent the support part 2 from sliding out. The first limiting hole 12 may be a screw hole, and the limiting block is a pressing screw matched with the screw hole.

In this embodiment, the number of supporting parts 2 is two, which are arranged at intervals along the length direction of the lifting beam 1 to achieve stable support for the lifting beam 1 and ensure the safety of lifting. Of course, in other embodiments, the number of supporting parts 2 can be more than two, and their positions on the lifting beam 1 can be adjusted as required, so that the lifting device can carry out the lifting work more stably.

Preferably, the supporting part 2 further includes a crossbeam 21 for connecting with the upper plug-in beam of the lifting beam 1 , so as to realize a stable and reliable connection between the supporting part and the lifting beam 1 . As shown in Figure 3, the number of support members included in the support part 2 is two, and the two support members are away from each other along the length direction of the support members (of course, in other embodiments, the two support members can be arranged in parallel and spaced apart. ). The beam 21 includes two accommodating frames 211 for accommodating supports and a connecting block 212 connected between the two accommodating frames 211 , and the two supporting members are inserted into the accommodating frames 211 correspondingly.

In this embodiment, the receiving frame 211 is provided with a second through hole 215, and the support member is provided with a threaded hole coaxial with the second through hole 215. When connecting, a bolt (not shown) passes through the second through hole 215. The through hole 215 is threadedly connected with the threaded hole on the support to realize fastening. The method of bolt connection can facilitate the disassembly and assembly of the crossbeam 21 and the supporting member, so that the hoisting device can be conveniently carried to different work locations for hoisting operations.

The connection block 212 is provided with an insertion groove 213 for installing the upper insertion beam of the lifting beam 1 . The insertion slot 213 is located at the lower part of the connection block 212, and the opening of the insertion slot 213 faces downward for the vertical plate to pass through. When the lifting beam 1 is connected with the crossbeam 21, the upper insertion beam is inserted into the insertion groove 213.

Preferably, in order to ensure that the position of the crossbeam 21 on the lifting beam 1 is fixed, and thus ensure that the lifting device is stable and reliable during lifting, a first through hole 214 communicating with the insertion groove 213 is provided on the connecting block 212, when the crossbeam After the position of 21 on the lifting beam 1 is properly adjusted, the anti-skid piece (not shown in the figure) passes through the first through hole 214 and presses against the upper surface of the lifting beam 1 to prevent the lifting beam 1 from sliding relative to the beam 21 , thereby stabilizing the lifting device. The first through hole 214 and the anti-slip member are, but not limited to, bolt holes and bolts that match.

After the first end 11 of the lifting beam is inserted into the insertion slot 213 , setting the first limiting hole 12 and the limiting block can prevent the lifting beam 1 from slipping out of the insertion slot 213 . When disassembling the lifting device, the limit block can be removed, and the above-mentioned anti-skid parts are controlled not to abut against the lifting beam 1, and the lifting beam 1 is pulled out from the insertion groove.

As a possible implementation, the support only includes the first leg 22 and the second leg 23, as shown in Figure 4, the second leg 23 can be inserted into the first leg 22, and the second leg 23 has A plurality of second limiting holes 27 arranged in sequence along the extending direction, and the hoisting device also includes a limiting pin that cooperates with one of the second limiting holes 27 and limits the extending length of the second leg 23 (in the figure not shown). Preferably, the plurality of second limiting holes 27 are set as second limiting holes 27 with the same size and shape. After the stretching length of the second leg 23 is properly adjusted, the limit pin is inserted into the second limit hole 27 at the junction of the first leg 22 and the second leg 23 to limit the extension of the second leg 23. The length of the first leg 22. In this way, the height of the lifting device can be adjusted to suit different working environments. The second support leg 23 can also be extracted from the first support leg 22. After the lifting work is completed, the lifting device can be disassembled to facilitate the handling and carrying of the lifting device.

Preferably, a connecting portion 24 is provided between the first leg 22 and the second leg 23, and after the installation of the hoisting device is completed, a bandage (or rope, etc.) can pass through the connecting portion 24 and be fixed to the tower Railings or other fixed positions, and then fix the lifting device, increasing the safety of the lifting device in the working process.

It is explained here that in this embodiment, the height of the support can be adjusted, and the support can include more than two legs (including the first leg 22 and the second leg 23), and the connection between the legs is preferably For, but not limited to, the telescopic connection mentioned above, any connection method that can make the height of the support member adjustable can be used in the hoisting device of this embodiment.

In order to reduce the weight of the lifting device, the material of the lifting device is preferably an aluminum alloy material. After the first leg 22 (about 8.5Kg in weight) and the second leg 23 (about 7.5Kg in weight) of the support are disassembled and separated, only the first leg 22 is connected with the crossbeam 21, which can no longer be disassembled, nor It will affect the operator's handling of the device because it is too heavy. Therefore, the beam 21 and the supporting member can also be fixedly connected together, such as by welding.

In order to facilitate the movement of the lifting device, casters 25 are provided at the bottom of the support part 2 . Because usually, the length of the slide rail 13 of the lifting beam 1 is limited (the length of the slide rail is preferably set to 2 meters, too long will cause the lifting device to be inconvenient to carry and cannot be used in a confined space), The distance to be hoisted by the hoisted objects will exceed the length of the slide rail 13. In this case, the casters 25 can be used to easily move the hoisting device to hoist the hoisted objects for a longer distance, improving adaptability.

Specifically, a support foot 26 is fixedly provided at the bottom of the second leg 23 , and a caster 25 is provided at the bottom of the support foot 26 , and the support foot 26 is used for connecting the support part 2 and the caster 25 . The connection mode between the casters 25 and the support feet 26 is preferably a detachable connection.

Preferably, the casters 25 are universal wheels, so that the lifting device can move in multiple directions and increase the range of transportation; preferably, the casters 25 are equipped with brakes, so that when the lifting device does not need to be moved, the lifting device can be Control caster 25 can not slide, and then stabilizes this hoisting device.

The hoisting part 3 in this embodiment is preferably selected as an electric hoist, because the electric hoist is light in weight (about 16KG), easy to carry and easy to transport to the tower platform of the wind power generating set. The wire rope of the electric hoist is about 9 meters long, which can meet the lifting height of the tower platform of the wind turbine; and the weight of the suspended object of the electric hoist exceeds the weight of the converter module (about 150Kg). The electric hoist is connected with the lifting beam 1 through the pulley arranged in the slide rail 13 , so that the electric hoist can slide along the slide rail 13 .

The hoisting device shown in Figure 1 needs to be assembled before use, and the assembly steps include:

a, the first leg 22 and the second leg 23 of each support are assembled together, and the two supports are connected with a beam 21 to form a support part 2;

b. Insert the first end 11 of the lifting beam into the insertion slot 213 of a supporting part 2, press against the lifting beam 1 with an anti-skid member, and insert the limiting block into the first limiting hole 12;

c. Insert the lifting beam 1 into the insertion slot 213 of the second support part 2, and use the anti-slip parts to press against the lifting beam 1;

d. Install the electric hoist on the slide rail 13 of the lifting beam.

After the lifting device is assembled, it can be used to replace the converter module of the wind power generating set. Usually, when replacing a converter module, the old module at the bottom of the tower needs to be dismantled and replaced with a new one. This operation can be completed by only two operators.

Firstly, the operator transports the components of the hoisting device to the tower platform of the wind power generating set, and then assembles them according to the above steps, and then the module can be hoisted by the rope of the electric hoist. When lifting, the position of the electric hoist can be adjusted by controlling the electric hoist to slide along the slide rail 13 and the sliding casters 25, so as to better adapt to the position of the module that needs to be moved. The movement of the module to the high and low positions can be completed by controlling the lifting rope of the electric hoist.

The following describes how to use the device to complete the replacement of the converter module of the wind power generating set with reference to FIGS. 5 to 8 .

Figure 5 shows the working state of the lifting device, the old module can be lifted from the tower bottom to the tower platform and the new module can be lifted from the tower platform to the tower bottom. First, install the hoisting device above the observation hole 5 away from the tower door. Due to the space limitation of the tower platform, the hoisting device should be in the lowest possible application state, that is, adjust the second leg 23 to insert the first One leg 22 has a certain length, and the second leg 23 is fixed relative to the first leg 22 with a limit pin, and then the electric hoist is installed on the slide rail 13 of the lifting beam 1 . It is worth noting that, when using the lifting device, in order to fix the device and carry out the lifting work more stably, it is necessary to brake the caster 25 and fix the four supports with special bandages.

Specifically, when hoisting the old module from the bottom of the tower to the tower platform, one operator is responsible for dismantling the old module at the bottom of the tower, and one operator is responsible for operating the electric hoist on the tower platform to slide along the slide rail 13 to the observation hole 5, and lower the rope to the converter at the bottom of the tower. After the operator at the bottom of the tower hangs the old module on the rope, he operates the electric hoist to raise the rope to the tower platform, and slides the electric hoist to place the old module on the on the tower platform. Then, the above-mentioned caster brakes and special bandages can be untied, the lifting device is pushed to move to the tower door, and the old module is placed at the tower door.

When hoisting the new module from the tower platform to the bottom of the tower, the operator of the tower platform is responsible for hoisting the new module with a rope, and sliding the electric control hoist to the top of the observation hole 5, and lowering the rope to the converter at the bottom of the tower , the operator at the bottom of the tower removes the new module and installs it.

The working state of the lifting device shown in Fig. 6 is basically the same as that in Fig. 5, and the converter module is replaced through the observation hole 5 near the tower door. For the specific working process, refer to the corresponding content of the working state shown in Fig. 5 . At this time, the lifting beam 1 can also be extended to the outside of the tower tube door, and then the old module is hoisted from the bottom of the tower to the tower tube platform, and then the electric hoist is slid to the outside of the tower tube door and the old module is placed outside the tower tube door.

In the working state of the lifting device shown in FIG. 7 , the module can be lifted from the ladder platform 6 outside the tower door to the inside of the tower and from the inside of the tower to the ladder platform 6 . When installing the hoisting device, keep the four supports in the tower, the hoisting beam 1 extends out of the tower, and adjust the length of the second leg 23 protruding from the first leg 22 to control the hoisting. The height of the device is adapted to the height of the tower door.

Specifically, when lifting the module from the tower to the ladder platform 6, only one operator can complete the lifting work. The operator lifts the module with a rope, slides the electric hoist to the outside of the tower, and places the module On the ladder platform 6. Similarly, in the working state of the lifting device shown in Figure 7, the new module can also be lifted from the ladder platform 6 into the tower, and the lifting device can also be moved by sliding casters 25 to lift the tower The new module at the door is hoisted to the two observation holes 5 on the tower platform.

In the working state of the lifting device shown in FIG. 8 , the module can be transported from the ladder platform 6 of the tower to the ground and from the ground to the ladder platform 6 . When installing the lifting device, the length of the second leg 23 extending out of the first leg 22 can be adjusted to the maximum, so that the device is in the highest state; then the lifting beam 1 is stretched out from the ladder guardrail 61, and the electric hoist Installed on the lifting beam 1 to facilitate the lifting of the module to the outside of the ladder guardrail 61. The casters 25 of the four supports can also be disassembled simultaneously, so that the hoisting device is erected on the ladder platform 6 by the support feet 26, and the control support feet 26 are fixed as close as possible to the edge of the ladder platform 6. At this time, the area of the four supporting feet 26 and the mechanical strength of the device should be strictly designed to meet the requirements for the area of the ladder platform 6 .

Specifically, when lifting the module from the ladder platform 6 of the tower to the ground, an operator lifts the module with a rope on the ladder platform 6, controls the electric hoist to lift the module so that its height exceeds the ladder guardrail 61, and then slides The electric hoist is outside the ladder guardrail 61, and the control rope is slowly lowered to the ground or the vehicle and ship platform, and the module is taken off the rope by other operators. Similarly, the module can also be lifted from the ground to the ladder platform 6 according to the above path.

It is explained here that when using the lifting device to replace the converter module, the lifting device only needs to be assembled once during the specific operation. The casters 25, adjusting the relative position of the beam 21 and the lifting beam 1, etc., realize the mutual conversion between the working states shown in FIGS. 5-8. For example, to switch from the working state shown in Figure 7 to Figure 8, it is necessary to move the device to the ladder platform 6 by sliding the caster 25, adjust the length of the second leg 23 extending out of the first leg 22 to the maximum, and then remove the caster 25 and fix the supporting feet to complete. And by the conversion of working state shown in Fig. 5 to Fig. 6, only need move lifting device by sliding caster 25 and just can finish.

The lifting device for the wind power generating set of the present utility model has the following effects:

The height of the supporting part can be adjusted by adjusting the length of the second leg protruding from the first leg, the lifting device can be moved by sliding the casters, and the lifting object can be moved by sliding the lifting part, which can save time and effort to complete the converter Module replacement;

The detachable connection of lifting beam, supporting part and lifting part makes the lifting device easy to assemble and disassemble;

The lifting device can be fixed through the connection part, brake, etc., so that the lifting process can be carried out safely;

The lifting device also has the advantages of convenient portability, easy assembly and disassembly, and simple operation.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A hoisting device for a wind power generating set, characterized in that it comprises: Lifting beam (1); A support part (2), the lifting beam (1) is arranged on the top end of the support part (2), there are at least two support parts (2), and the support part (2) is on the The position on the transport beam (1) is adjustable, and each of the support parts (2) includes a support, and the support includes at least a first leg (22) and a second leg (23) connected in sequence, so The length of the second supporting leg (23) extending out from the first supporting leg (22) is adjustable; A lifting part (3), the lifting part (3) is arranged on the lifting beam (1). 2. The hoisting device for a wind power generating set according to claim 1, characterized in that, the support part (2) further comprises a beam (21), and there are two support members, and the two support members The tops are all connected with the beams (21). 3 . The hoisting device for a wind power generating set according to claim 2 , wherein the distance between the bottoms of the two supports is greater than the distance between the tops of the two supports. 4 . 4. The lifting device for wind power generating set according to claim 2 or 3, characterized in that, the crossbeam (21) is provided with an insertion slot (213), and the lifting beam (1) is inserted into the In the slot (213) of the beam (21). 5. The hoisting device for a wind power generating set according to claim 4, characterized in that, the beam (21) comprises two accommodation frames (211) for accommodating the support members and a frame connected to the two accommodation frames (211) between the connection block (212), the insertion slot (213) is located at the bottom of the connection block (212), the connection block (212) is provided with the insertion slot (213) connected to the first through hole (214), and the hoisting device further includes an anti-skid member that cooperates with the first through hole (214) and presses against the hoisting beam (1). 6. The lifting device for wind power generating set according to claim 1, characterized in that, a first limit hole (12) is provided on the first end of the lifting beam (1), and the first limit hole (12) is A limit block is detachably arranged in the bit hole (12). 7. The hoisting device for a wind power generating set according to claim 1, characterized in that, the second leg (23) has a plurality of second limiting holes (27) sequentially arranged along the extending direction, The hoisting device also includes a limit pin that cooperates with one of the limit holes and limits the extension length of the second leg (23). 8. The hoisting device for a wind power generating set according to claim 1, characterized in that, the support part (2) further includes casters (25), and the casters (25) are arranged at the bottom of the support. 9. The lifting device for wind power generating set according to claim 1, characterized in that, a slide rail (13) is provided on the lifting beam (1), and the lifting part (3) moves along the sliding rail (13). The rail (13) is movably arranged on the slide rail (13). 10. The lifting device for a wind power generating set according to claim 1, characterized in that, the lifting part (3) is an electric hoist.